![]() ![]() This agreement assumes that the drought is a temporary condition, or that a new agreement can be reached if in fact the drought worsens. This 2007 interim drought agreement has limited water use to 7.05 million acre-feet per basin until 2026. What two states take a full half of the available Colorado River water each year?ĭue to the decreased amount of water available over the past two decades, a new agreement was reached in 2007. Look at the Colorado River Apportionment diagram above. ![]() Specifically, California would receive an annual allocation of 4.4 million acre-feet Nevada 300,000 acre-feet and Arizona 2.8 million acre-feet. In 1928, the Boulder Canyon Project Act revised specific water provisions for the lower basin states of Arizona, California, and Nevada. The boundary between the basins is at Lee's Ferry just below Glen Canyon Dam. In 1922, representatives from the seven states and the United States government created a compact allocating 15 million acre-feet is a unit of volume equal to the volume of a sheet of water one acre in area and one foot in depth 43,560 cubic feet of water to be shared by the states.The Colorado River Compact, divided the states into upper and lower basins with provisions of 7.5 million acre-feet to be split among the states within each basin. × 2007 water apportionment by state Credit: MITĭuring the early 1900s, the states sharing the basin debated for shares of the Colorado River. What changes in water level can you see took place during different seasons? Under current conditions, even without climate change, large year-to-year fluctuations in reservoir storage are possible. In addition, the amount of water diverted from the river to meet the needs of cities and agriculture continues to grow. Numerous studies over the last 30 years have indicated that the Colorado River is likely to experience reductions in runoff due to changes in the water cycle caused by increasing global temperatures. Without the water of the Colorado River, Las Vegas, Nevada would be a mostly uninhabited desert area, San Diego, California (which gets 70% of its water from the Colorado), could not support its present population, and California's Imperial Valley (which grows a major portion of the nation's vegetables) would consist mostly of cactus and mesquite plants. A multi-billion recreation industry including whitewater rafting, boating, fishing, camping, and hiking.Water used to produce about 15% of the produce and livestock in the US.Water for more than 30 million people in seven US states and Mexico.Electricity (from hydroelectric plants at major dams).The river supplies the following resources and activities enjoyed by 15 million people a year: Originally a wild and untamed river, manmade dams, dikes, and canals were constructed over time to control manage it. The river stretches 1,450 miles from the Rocky Mountains to the Gulf of California in Mexico. To begin your tree-ring science expedition to the Colorado River Basin, you will investigate its physical characteristics and learn how the water is used and apportioned by those who live there. Part 1: Straws in the Colorado River: Will We Run Out of Water? ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |